A man in a space suit is standing on an asteroid only ten feet in diameter. He is working on a rocket engine that is upside down, with the thrust aimed away from the asteroid, pointing straight down into the asteroid. This turns the asteroid into a s...
一名身穿宇航服的男子站在一颗直径仅 10 英尺的小行星上。他正在修理一台倒置的火箭发动机，推力方向背离小行星，直指小行星内部。这使得小行星变成了一个 s...
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